PLS file support

[carson-coder]

NOTE:
please use english, or include an english translation. aside from that,
all of the below are optional, consider them as inspiration, delete and rewrite at will

is your feature request related to a problem? Please describe.
I recently uploaded a couple liveatc streams to my copyparty instance (as pls files) and was hoping that copyparty has pls file support

Describe the idea / solution you'd like
I would like some way to stream pls files in copyparty

Describe any alternatives you've considered
I could download the files but then why use copyparty at that point.